19004eefaa
Cherry-pick merge from pablohc/crosspoint-reader@2d8cbcf, based on upstream PR #556 by martinbrook with pablohc's refresh optimization. - Add JPEG decoder (picojpeg) and PNG decoder (PNGdec) with 4-level grayscale Bayer dithering for e-ink display - Add pixel caching system (.pxc files) for fast image re-rendering - Integrate image extraction from EPUB HTML parser (<img> tag support) - Add ImageBlock/PageImage types with serialization support - Add image-aware refresh optimization (double FAST_REFRESH technique) - Add experimental displayWindow() partial refresh support - Bump section cache version 12->13 to invalidate stale caches - Resolve TAG_PageImage=3 to avoid conflict with mod's TAG_PageTableRow=2 Co-authored-by: Cursor <cursoragent@cursor.com>
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
#include "ImageDecoderFactory.h"
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#include <HardwareSerial.h>
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#include <memory>
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#include <string>
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#include "JpegToFramebufferConverter.h"
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#include "PngToFramebufferConverter.h"
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std::unique_ptr<JpegToFramebufferConverter> ImageDecoderFactory::jpegDecoder = nullptr;
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std::unique_ptr<PngToFramebufferConverter> ImageDecoderFactory::pngDecoder = nullptr;
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ImageToFramebufferDecoder* ImageDecoderFactory::getDecoder(const std::string& imagePath) {
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std::string ext = imagePath;
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size_t dotPos = ext.rfind('.');
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if (dotPos != std::string::npos) {
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ext = ext.substr(dotPos);
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for (auto& c : ext) {
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c = tolower(c);
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}
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} else {
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ext = "";
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}
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if (JpegToFramebufferConverter::supportsFormat(ext)) {
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if (!jpegDecoder) {
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jpegDecoder.reset(new JpegToFramebufferConverter());
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}
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return jpegDecoder.get();
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} else if (PngToFramebufferConverter::supportsFormat(ext)) {
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if (!pngDecoder) {
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pngDecoder.reset(new PngToFramebufferConverter());
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}
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return pngDecoder.get();
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}
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Serial.printf("[%lu] [DEC] No decoder found for image: %s\n", millis(), imagePath.c_str());
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return nullptr;
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}
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bool ImageDecoderFactory::isFormatSupported(const std::string& imagePath) { return getDecoder(imagePath) != nullptr; }
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